Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.String.index
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menelusuri kemunculan pertama substring dalam string. Menampilkan indeks kecocokan pertama, atau -1.
| Penggunaan | Hasil |
|---|
String.index(pattern) | Bilangan Bulat |
| Argumen | Jenis | Detail |
|---|
ini: target | String | String yang akan ditelusuri. |
pattern | String | String yang akan ditemukan. |
Contoh
Code Editor (JavaScript)
print(ee.String('abc123').index('')); // 0
print(ee.String('abc123').index('c1')); // 2
print(ee.String('abc123').index('ZZ')); // -1
// index is case-sensitive.
print(ee.String('abc123').index('BC')); // -1
Penyiapan Python
Lihat halaman
Lingkungan Python untuk mengetahui informasi tentang Python API dan penggunaan
geemap untuk pengembangan interaktif.
import ee
import geemap.core as geemap
Colab (Python)
print(ee.String('abc123').index('').getInfo()) # 0
print(ee.String('abc123').index('c1').getInfo()) # 2
print(ee.String('abc123').index('ZZ').getInfo()) # -1
# index is case-sensitive.
print(ee.String('abc123').index('BC').getInfo()) # -1
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-26 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-26 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eindex()\u003c/code\u003e method searches a string for the first occurrence of a specified substring and returns the index of the first match.\u003c/p\u003e\n"],["\u003cp\u003eIf the substring is not found, the method returns -1.\u003c/p\u003e\n"],["\u003cp\u003eThe search performed by \u003ccode\u003eindex()\u003c/code\u003e is case-sensitive.\u003c/p\u003e\n"],["\u003cp\u003eThe method can be used in both JavaScript and Python environments within the Earth Engine platform.\u003c/p\u003e\n"],["\u003cp\u003eAn empty string pattern will return 0 as the index.\u003c/p\u003e\n"]]],["The `index` function searches a string (`target`) for a specified substring (`pattern`). It returns the integer index of the first matching substring's start position. If no match is found, it returns -1. The function is case-sensitive. An empty `pattern` will always return an index of 0. The provided examples illustrate the usage and expected return values.\n"],null,["# ee.String.index\n\nSearches a string for the first occurrence of a substring. Returns the index of the first match, or -1.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-------------------------|---------|\n| String.index`(pattern)` | Integer |\n\n| Argument | Type | Details |\n|----------------|--------|-----------------------|\n| this: `target` | String | The string to search. |\n| `pattern` | String | The string to find. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nprint(ee.String('abc123').index('')); // 0\nprint(ee.String('abc123').index('c1')); // 2\nprint(ee.String('abc123').index('ZZ')); // -1\n\n// index is case-sensitive.\nprint(ee.String('abc123').index('BC')); // -1\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nprint(ee.String('abc123').index('').getInfo()) # 0\nprint(ee.String('abc123').index('c1').getInfo()) # 2\nprint(ee.String('abc123').index('ZZ').getInfo()) # -1\n\n# index is case-sensitive.\nprint(ee.String('abc123').index('BC').getInfo()) # -1\n```"]]
